First off, thanks for your time.

My question:

Can Prostatitis manifest itself as some type of dermatitis on the
penis? Specifically brought on by either saliva or vaginal fluids?

Some background (i'll keep it as short as possible...):

-G/F suffers bad bladder infection.

-G/F suffers bad yeast infection (due to antibiotics prescribed for
bladder)

-I begin to suffer 'dermatitis like' symptoms on my penis and scrotum.

I have seen a Dermo. He prescribed Steriods/Antifungals. Didn't really
work...

If I have sex, and don't use a condom, the irritation occurs almost
immediately afterwards. Oral sex is equally irritating. Masturbation
does not seem to manifest the same symptoms, or the same severity of
reaction, so simple friction/trauma is not the culprit.

There seems to be a connection to my partner's fluids. It may be worth
mentioning that she has had recurrent yeast infections...

Allergy? Contact Dermatitis? Yeast sensitivity? Yeast infection?

Prostatitis????

Any insight would be greatly appreciated. Tnx.